Here's one I've just figured out...
For most of my earlier years in the industry, the National Beekeepers' Assn had admin, accounting, and Executive Secretary services provided by the Pork Industry Board. For my first conference, 1975, Graham Beard was the Exec Secy, followed by David Dobson, and then Steuart Goodman. All up, the NBA worked with the Pork Board for about 20 years...
Whenever anyone would ask "Why does the Pork Industry Board" do the admin stuff for the NBA, I had always assumed it was just some other primary producer body who saw the chance to take on